Handle assignability for Send and SendSet

sdk/lib/_internal/compiler/implementation/resolution/members.dart

Index: sdk/lib/_internal/compiler/implementation/resolution/members.dart
diff --git a/sdk/lib/_internal/compiler/implementation/resolution/members.dart b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
index 5ce325184ecfc3cc7673858d736c8478c8a035f2..5556303cbc0d82811d96be758fb80fdd5d5888d7 100644
--- a/sdk/lib/_internal/compiler/implementation/resolution/members.dart
+++ b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
@@ -2211,6 +2211,9 @@ class ResolverVisitor extends MappingVisitor<Element> {
         compiler.backend.registerClassUsingVariableExpression(cls);
         compiler.backend.registerTypeVariableExpression(mapping);
       } else if (target.impliesType() && !sendIsMemberAccess) {
+        // Set the type of the node to [Type] to mark this send as a
+        // type literal.
+        mapping.setType(node, compiler.typeClass.computeType(compiler));
         compiler.backend.registerTypeLiteral(mapping);
       }
     }